She is best known internationally for a leading role as Charlotte in the German television drama Generation War (2013).

Stein was born in Vienna, Austria, to an Austrian mother and her Swiss father, television presenter Dieter Moor.

Stein came to national prominence with the 2013 German miniseries Generation War in which she played one of the five protagonists.

In 2021, she won the Romy for the second time for her performance in the TV mini series Unterleuten: The Torn Village.

[5] Notably, they later starred together in 2013's Generation War, 2014's Tour de Force, and 2015's Das goldene Ufer.